KR100428765B1 - Management information transmitting system and method in asynchronous transfer mode - Google Patents

Abstract

The present invention manages the one or more cells in an Asynchronous Transfer Mode (ATM) exchange in which one or more cells directly perform communication between the user and the user, the user and the user server, and the user server and the user server. A module switch center, a shared memory storing management information on the cells monitored by the module switch center, a management process for monitoring whether the plurality of module switch centers are operating normally, and management information transmitted from the module switch center It provides a management information transmission system and method according to the asynchronous transmission mode including a log file for storing a, and a network management system for monitoring the operation of the plurality of management processes, and for the cell that does not transmit management information Forced shutdown and restart As a result, fast recovery is performed on the cell, thereby providing a more enhanced service to the user.

Description

MANAGEMENT INFORMATION TRANSMITTING SYSTEM AND METHOD IN ASYNCHRONOUS TRANSFER MODE}

The present invention relates to a management information transmission system and method in an asynchronous transfer mode (ATM) exchange.

In general, in an ATM exchange, a management information transmission system is operated to monitor whether each cell is operating normally for each unit cell (not shown) directly connecting communication. As shown in FIG. 1, the management information transmission system 100 directly manages an exchange process 110 that manages an ATM switch that performs a task of directly connecting a user and a user, a user and a user server, and a communication between the user server and the user server. A management process 120 for monitoring whether the plurality of exchange processes 110 are operating normally, and a network management system 130 for monitoring the operation of the management process 120 (hereinafter referred to as NMS window) It is included).

The exchange process 110 may also be referred to as a Module Switching Center (hereinafter referred to as MSC), and may include an error time (Errored Second, eS), a Severely Errored Second (sES), and an unavailability time for each cell. It periodically monitors performance information and alarm information such as Unavailable Second (uAS) and Code Violation (cV). In addition, the management process 120 includes a log file 121 that stores management information transmitted by the exchange process 110 or the like.

The management information transmission system 100 will be described in more detail. The MSC 110 continuously monitors management information for each unit cell (not shown) and transmits the management information to the management process 120. If the information transmitted from a specific cell indicates that user data is not properly transmitted to a user or a user server, or if the specific cell does not transmit data such as performance information and alarm information, the management process 120 receives the received information. By doing so, the MSC 110 performs a command for automatically or manually restoring a corresponding unit cell.

In this case, the NMS 130 receives a command for receiving or transmitting information on whether the management information transmission system 100 is operating properly from the log file 121 or the management process 120. To pass on.

The transmission of all the information is mainly carried out through the Transmission Control Protocol / Internet Protocol (hereinafter referred to as TCP / IP), and management information about each cell periodically transmitted by the MSC 110 is stored in the management process. It is stored in the log file 121 of 120.

In this case, the transmission of the periodic management information is performed sequentially for each cell managed by the MSC 110 and is performed at a predetermined period, for example, 10 seconds to 60 seconds. Thus, if an MSC 110 having N cells has a problem in transmitting management information in a specific cell, and transmits and stores management information for one of the N cells to the management process 120. If the required time is t seconds, if the period until the next cell transmits the next transmission data is 60 seconds, it is necessary to wait for a time of N x t + 60 seconds.

Therefore, it is difficult to quickly recover the specific cell in which the problem occurs.

In order to solve this problem, there is also a method of reducing the period, but it is limited to apply due to the limiting factors such as the tendency of increasing the number of cells managed by the MSC 110 and the time for storing the management information log transmitted by the management process. have. In addition, due to the nature of the ATM exchange system, a fast recovery must be performed for a cell that has a problem.

In order to solve the above problems, the present invention provides a method of easily managing management information by providing a shared memory between the management process and the MSC, and by providing a method for continuously monitoring a cell having a management information transmission problem. The present invention provides a method for quickly recovering a generated cell.

1 is a schematic diagram showing a conventional management information transmission system.

2 is a schematic diagram showing a management information transmission system according to a preferred embodiment of the present invention.

3A to 3D are flowcharts illustrating a management information transmission method according to a preferred embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110, 210 Module Switching Center (MSC)

220 shared memory

120, 230 management process

121, 231 log files

130, 240 external matching device

In order to achieve the above object, the present invention provides an Asynchronous Transfer Mode (ATM) exchange in which one or more cells directly perform communication between a user and a user, a user and a user server, and a user server and a user server. A module switch center for managing the one or more cells, a shared memory storing management information for the cells monitored by the module switch center, a management process for monitoring whether the plurality of module switch centers are operating normally, the module switch Provided is a management information transmission system in an asynchronous transmission mode including a log file storing management information transmitted from a center, and a network management system for monitoring the operation of the plurality of management processes.

In addition, the management information in the asynchronous transmission mode further comprises an external matching device for transmitting to the management process a command to receive or transmit information from the log file or the management process information about whether the management information transmission system is operating properly. Provide a transmission system.

In another object of the present invention, a module switch center for performing a task of directly connecting a communication between a user and a user, a user and a user server, and a user server and a user server and managing the one or more cells, the module switch center Shared memory for storing the management information for the cell monitored by the management process for monitoring whether the plurality of module switch centers are operating normally, a log file for storing the management information transmitted from the module switch center, and the plurality of In the management information transmission system in an asynchronous transmission mode including a network management system for monitoring the operation of the two management processes, the management process initializes the internal buffer for the shared memory and the log file and writes the log file Connecting each module switch center in an open state to obtain management information, requesting management information for each module switch center at a period of the first predetermined time, and requesting management information for each module switch center at a second predetermined time period; Check the IPC connection status, if the IPC connection status is not good, switch the IPC counter to the initial value, indicate that the IPC connection status is not good, and if the IPC connection status is good, increase the IPC counter by one by one When the counter reaches a predetermined number of times, the management process forcibly suspends and restarts the corresponding cell by the module switch center, and the management process logs the details of the forced suspend and restart for the module switch center. Outputting to a file 231 and a printer; And a third step of storing management information in the log file at a predetermined time interval.

In addition, when the management process initializes the internal buffers for the shared memory and the log file and opens the log file in the write mode, connecting each module switch center to obtain management information may be previously managed by an external matching device. Provided is a management information transmission system in an asynchronous transmission mode further comprising requesting information.

Further, the management information in the step of requesting management information for each module switch center at a period of the first predetermined time is management information for each cell and is stored in a shared memory. To provide.

The management information in the step of the management process storing the management information in the log file at a third predetermined time period is management information for each module switch center in addition to the management information for each cell, and the log file. It provides a management information transmission system in the asynchronous transmission mode stored in.

Further, in the first predetermined time, the second predetermined time, and the third predetermined time, the first predetermined time is the smallest, the third predetermined time is the largest, and the second predetermined time is an asynchronous value between the first predetermined time and the third predetermined time. Provided is a management information transmission system in a transmission mode.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the management information transmission system 200 according to the preferred embodiment of the present invention allows each cell (not shown) to directly communicate with a user and a user, a user and a user server, and a user server and a user server. MSC 210 that manages each cell in an Asynchronous Transfer Mode (ATM) exchange that performs the connecting operation, and shared memory that stores management information about each cell monitored by the MSC 210. 220, a management process 230 for monitoring whether the plurality of MSCs 210 are operating normally and an NMS 240 for monitoring the operation of the plurality of management processes 230.

Compared to FIG. 1, the present invention further includes the shared memory 220, wherein the shared memory 220 transmits an initialization state, performance, and alarm information for each cell at predetermined intervals, The accuracy of the information, the detailed processing of each of the information, the operation and status of the I / O interface of the CDMA switch, the Interprocess System between the CDMA switch and the MSC 210 (hereinafter referred to as IPS) Information) such as an operational state, a state between the MSC 210 and the management process 230.

In addition, the management process 230 includes a log file 231 for storing management information transmitted from the MSC 210, etc., the log file 231 is a predetermined period (e.g. For example, 1 minute) for each cell transmitted from the MSC 210, whether the initialization status, performance and alarm information is transmitted at predetermined intervals, whether the information is correct, whether the detailed processing of each of the information, CDMA switch Operation status and state of the I / O interface of the communication system between the CDMA switch and the MSC 210 (hereinafter referred to as IPS) operating state, internal between the MSC 210 and the management process 230 In addition to information such as Inter Process Communication (hereinafter referred to as IPC) status, the MSC 210 has an identifier (ID), a file usage amount, a central processing unit (hereinafter referred to as a CPU), a utilization rate, a memory, and the like. four Rate, memory size, and stores the additional management information such as a state.

In addition, the NMS 240 may be configured to receive or transmit information about whether the management information transmission system 200 is operating properly from the log file 231 or the management process 230. To pass on.

This will be described below in connection with the management information transmission method of the present invention.

3A to 3D, when the NMS 240 initially requests management information, the management process 230 may store a shared memory, a semaphore for determining and executing a preceding process, and the log file 231. The MSC 210 is connected to each MSC 210 while initializing an internal buffer and the log file is opened in the write mode. (Step 10) At this time, each MSC 210 at the interval of the first predetermined time (1 second) is obtained. Requesting management information with respect to (step 11) and determining whether the requested management information is in the MSC 20 (step 20) and obtaining the management information (connection B) by requesting connection (step 21) The management information is stored in the shared memory 220 (step 22).

In this case, the stored management information is transmitted for each cell transmitted from the MSC 210 by a predetermined period of transmission of the initialization status, performance and alarm information, whether the information is correct, whether the detailed processing of each of the information, CDMA Whether or not the I / O interface of the exchange is operating, the IPS operating state between the CDMA switch and the MSC 210, the IPC state between the MSC 210 and the management process 230, and the like.

If the connection is not established, the connection is diagnosed (step 23), the information task corresponding to the diagnosis is performed (step 24), and the operation result is transmitted to the NMS 240 (step 25). After the second predetermined time (10 seconds) (step 30) to check the IPC connection status for each MSC (210), if the IPC connection status is not good, the IPC counter is switched to the initial value ( Step 32) The IPC connection state is indicated as not good.

In addition, if the IPC connection state is good, there is no management information in the management information determination step (step 20), so that the IPC counter is increased by one, so that the IPC counter reaches ten times (step 35). The MSC 210 either forcibly suspends and restarts the corresponding cell or manually suspends and restarts the MSC 210. (Steps 36 and 37) The management process 230 then executes the MSC. The details of the forced interruption and reactivation for 210 are output to the log file 231 and the printer (step 38).

Thereafter, the management process 230 stores the management information in the shared memory 220 at a period of a third predetermined time (60 seconds) (step 40). Initialization status, performance and alarm information for each cell transmitted by the transmission period, whether the information is correct, whether or not the detailed processing of each of the information, whether and operation of the I / O interface of the CDMA switch, Identifier (ID), file usage, CPU usage rate for the MSC 210 in addition to information such as IPS operation status between the CDMA switch and the MSC 210, IPC status between the MSC 210 and the management process 230, and the like. And management information such as memory usage rate, memory size, and status in the log file 231. (Step 41 and Step 42).

Therefore, the process up to the step (step 38) of storing the details of forcibly stopping and reactivating the corresponding cell in the second predetermined time step (step 30) in the log file 231 is managed by a problem occurring in the predetermined cell. If the information cannot be transmitted to the management process 231, it is detected when the IPC counter is a predetermined number of times (10 times), and the cell is restarted so that a quick recovery is performed.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and changes are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims.

As described above, the system and method for forced shutdown and reactivation of a cell that does not transmit management information in an asynchronous transfer mode (ATM) exchange according to the present invention are more convenient to a user by performing a quick recovery of the cell. It can provide an improved service.

Claims (7)

In an Asynchronous Transfer Mode (ATM) exchange where one or more cells perform the work of directly connecting users and users, users and users 'servers, and communications between users and users' servers. A module switch center managing the one or more cells; A shared memory storing management information about the cell monitored by the module switch center; A management process for monitoring whether the plurality of module switch centers are operating normally; A log file for storing management information transmitted from the module switch center; And Management information transmission system in an asynchronous transmission mode including a network management system for monitoring the operation of the plurality of management processes. The apparatus of claim 1, further comprising an external matching device for transmitting a command to the management process to receive or transmit information about whether the management information transmission system is operating properly from the log file or the management process. Management information transmission system in the asynchronous transmission mode. A module switch center for performing communication between the at least one cell and a user and the user, the user and the user server and the communication between the user server and the user server and managing the at least one cell, in the cell monitored by the module switch center. Shared memory for storing the management information for the management, the management process for monitoring whether the plurality of module switch centers are operating normally, the log file for storing the management information transmitted from the module switch center, and the operation for the plurality of management processes In the management information transmission system in asynchronous transmission mode including a network management system for monitoring whether The management process initializing an internal buffer for the shared memory and the log file and connecting each module switch center with the log file open in a write mode to obtain management information; Requesting management information for each module switch center at a period of the first predetermined time; JC checks the IPC connection status of each module switch center at a predetermined time period, and if the IPC connection status is not good, switches the IPC counter to an initial value, indicates that the IPC connection status is not good, and the IPC connection. If the status is good, incrementing the IPC counter one by one, when the IPC counter reaches a predetermined number of times, the management process forcing the module switch center to stop and restart the corresponding cell; The management process may include outputting, to the log file 231 and a printer, details of the forced interruption and reactivation of the module switch center; And the management process stores the management information in the log file at a third predetermined time period. 4. The method of claim 3, wherein the management process initializes the internal buffers for the shared memory and the log file and connects each module switch center with the log file open in write mode to obtain management information previously. And a management device requesting management information. 4. The asynchronous transmission of claim 3, wherein the management information in the step of requesting management information for each module switch center at a predetermined period of time is management information for each cell and is stored in a shared memory. Method of transmitting management information in mode. The management information according to claim 3, wherein the management information in the step of the management process storing the management information in the log file at a third predetermined time period is management information for each module switch center other than management information for each cell. And stored in the log file. The said predetermined time is the smallest, the 3rd predetermined time is largest, and the said 2nd predetermined time is the said 1st predetermined time and the 3rd predetermined time in the said 1st predetermined time, the 2nd predetermined time, and the 3rd predetermined time. Method of transmitting management information in the asynchronous transmission mode, characterized in that the value between.